1.

A gun of mass M at rest on a smooth surface fires a shell of mass m. the ratio of kinetic energy of the shell and gun after firing is :: (Assume that shell is fired horizontally).A. m/MB. `M^(2)//m^(2)`C. `m^(2)//M^(2)`D. M/m

Answer» Correct Answer - 4
`k=p^(2)//(2m) rArr (k_(s))/(k_(g))=(m_(g))/(m_(s)) =M/m`


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